Valved pipe coupling



Sept. 30, 1952 w. F. MaGGLAsHAN, 'JR 2,612,389

VALVED PIPE COUPLING Filed Aug. l,l 1950 v Patented Sept. 30, 1952 V27-UNITED VALVED PIPE COUPLING William F. MacGlashan, Jr., Alhambra, Calif.,

assignor to Unitedv States of America as represented by the Secretary ofthe Application August 1, 195o, srfiaiNo. 177,055

v Y 1 This 'invention relates vto coupling valvesV including separable fluid coupling membersv and more sp'ecii'lcally to a coupling valve designed to' permit the supplying of air to an air tank of a rocket from an external source.

An object of the invention is a coupling valve arranged so that the air line within the rocket is automatically sealed when the coupling members of the valve are separated.

Another object of the invention is the balancing of pressure areas in such a way that the air pressure within the coupling members does notA exert a force tending to disconnect the coupling members.

The specic nature of the invention as well as other objects and advantages thereof will clearly appear from the following description and accompanying drawings in which: Fig. 1 is a longitudinal sectional view through the valve showing the coupling members separated.

Fig. 2 is a longitudinal sectional view through the valve showing the coupling members assembled.

' Referring now to the drawings by characters of reference, there is shown the coupling units I and 2. The coupling unit I is mounted in the rocket and has a portion extending exteriorly thereof through an aperture la in the exterior wall Ib of the rocket body.

The coupling unit I includes a generally cuplike body having a tubular hollow stem 2U reentrant from the base thereof and which is closed at its extended end 2| and is provided adjacent the end 2| with a series of laterally directed ports 2a. The other extremity 22 of the stem is internally provided with threads 23 for engagement with a suitable fitting 24 to an air tank in the rocket, not shown. A mounting flange 3 formed on the extremity 22 has mounting posts 4 extending therefrom and parallel to said stem in engagement with the inside surface of the wall I b. Bolts 5 extending through the mounting posts 4, include outwardly projecting guide rods 6 which support by means of a ange 1, a collar 8 in slidable relationship with the stem 20. 'I'he collar 8 is provided with internal grooves 9 adjacent each longitudinal extremity. A sealing ring 9a is positioned in each groove. The space between the rings is greater than that occupied by the lateral ports 2a. When the collar 8 is in its extended position, as shown in Fig. 1, the ports 2a are sealed by the rings 9a in cooperation with slidable collar 8. A helical spring I0 surrounding the stem 20 and normally hold- 2 Claims. (CI. v28a-"19):

ing thecollar 8 in extended sealing position has one end in contact with the ange 3 and its oppof site end in contact with the' iiange 'I.

' 4The coupling unit 2 includes a cylindrical body I I having a socket I2 formed in one end and extending inwardly thereof. In the socket I2` are spaced internal grooves I3 which receive sealing rings 13a separated axially substantially the same distance as that between the rings 9a in the collar 8. Between the sealing rings I3a the socket I2 is provided with an internal recess I4 which communicates with lateral ports I5 formed internally in the body II. The ports I5 communicate with longitudinal passages I6 in the body II parallel to thel socket I2. The passages I6 communicate in turn with other lateral passages I1 formed in the body and intersecting a threaded bore I8 in the opposite end of the body. The walls of the socket I2 are provided with relief ports I9 to permit the escape of occluded air and airlock in the socket.

In operation of the coupling valve the socket I2 in the body II is tted over the stem 20 and forced down the stem, displacing the collar until the ports 2a are sealed between the rings I3a. It will be observed that the pressure areas in the body II arel balanced and, therefore, irrespective of the pressure of the air, there is no resultant axial force tending to remove the body I I from the stem except that exerted by the spring I0.

I claim:

1. A separable iiuid coupling comprising a pair of telescopically intertting parts, the first of said parts comprising a generally cup like body having from the base thereof a reentrant hollow stem to form a fluid passageway, said stem having a first internally threaded end and a second closed end, and having a plurality of lateral ports adjacent'said closed end, a sleeve surrounding the closed end of said stem adjacent said lateral ports, means supporting said sleeve on said body for axial movement from rst position closing said ports to second position to open said ports and comprising a pair of Posts ixedly received in diametrically opposed longitudinal bores formed the sleeve forming on the side adjacent lthe abuty ting end of said cylindrical body a socket providing a friction fit about the closedend 'of said hollow stem, the wall of saidsocket having 'a`f rst plurality of lateral ports communicating on one side with said elongated passageway and on the other side with the lateral ports in'saidstem when said rst and second parts are telescopically` intertted, the wall of said sleeve having a second plurality of lateral ports on the side of said transverse Wall opposed .to said socket, Vsaid second plurality of Vlateral ports,communicatingk on one end with 'said longitudinal bore in said sleeve,

and on the other end with said elongated passageway. Y

2. The combination in claim 1 including a pair of sealing members in said slidable sleeve encircling said stem and axially separated to lie on opposite sides of the lateral ports in said stem when said sleeve is in port closing position, and a pair of sealing members in the Wall of said socket and axially separated to lie on opposite sides'ofthe lateral ports in said socket. and on opposite sidesofthe lateral ports in said stem when said parts are telescopically interfitted.

. WILLIAM F. MACGLASI-IAN, JR.

REFERENCES CITED The, ollqwingpreferences are of record in the file 'of'this patenm.

'Urli'rriibV STATES PATENTS `Number Name Date V'768,965 Strasburger Aug. 30, 1904 999,392 Meyer Aug. 1, 1911 1,118,506 Melas Nov. .24, 1914 1,968,421 I Pr'octorY 1- July 31, 1934 2,356,326 ALeblls Aug.v 22, `1944 2,393,679 Gunderson Jan 29, 1946 2,398,170 'Williani's'Foxcroft Apr. .9, 1946 2,471,237 Pasture i; ;j May 24,1949 

